Ceramic is actually not as tough as porcelain. Grade V porcelain is the toughest you can get, so far as I know.
For the noobs (I know it looks like I'm new but I forgot my old login credentials) the comments about .300 Winmag and duct taped plates refer to the original mall ninja, Gecko45. Great story and worth a trip down the Google hole if you wanna kill some time.
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